Pump



- Aug 14, 1945 J. R. LowRY v 2,382,080

PUMP

Filed Jan. 6, 1944l 3 Sheets-Sheet 1 @fig f- INVENTOR, Jaffe w/y BY @www Aug. 14, 1945. J R, OWRY 2,382,080

afzf- Y z INVENTOR.

Patented Aug. 14, 1945 UNITED STATES PATENT lOFFI CE PUMP i Jesse R. Lowry, Des Moines, Iowa .Application January 6, 1944, seria1No.517,277

(ci. s-183) 6 Claims.

This invention relates to improvements in reciprocating pumps and has particular reference to multiple cylinder pumps.

The principal object of this invention is. the .provision of a multiple cylinder reciprocating pum-p wherein the cylinders are qformed in a single block and wherein all of the operating parts are removable from the open. lower end of said block. v .v

A further object of the .invention is the provision of a multiple cylinder reciprocating pump having guided voutside plunger rods whiohnare motor driven from the top of the well.

Other objects are simplicity and economy of construction, ease Aand efficiency of operation, and adaptability for general use where a constant iiow of wa'ter is desired.

With these 'objects in view, reference will now be -had to 'the drawings, wherein: Figure l is .a foreshortened elevational View of a multi-cylinder reciprocatin'gpump shown in position in a Well hole, embodying this invention. Fig. 2 is an enlarged elevational view partly in section of the upper por-tionrof .the pump.

Fig. 3 .is an enlarged elevational view partly broken away 'of the motor driving gears.A

Fig. 4 is a sectional view taken on line IV-JV y of Fig. 6.

Fig. 5 is a cross sectional view taken Ifon line pump structa'ken :online 4 jacent the bottom of the well hole 112 to a pipe coupling vH which communicates with aitrans verse pipe `l5 then byrvertical pipe :|l8 to any :de-

sired-point above the ground level.v These pipes are so Iconstructed that the water from the l'cylinder block 20 adjacent the bot-tom of the Well, will travel upwardly through 'pipe IU, transverse pipe li6, thence'through vertical pipe i3 tothe point of use.` Cylinder Iblock-2l), best shownin v'6, is provided 'with parallel 'cylindersr 2f2 and.

'724. The axes of these cylindersV are parallel with 5.5

the vaxis of the well pipe l0 and are provided with outlet check valves 26 and 28 respectively. These I'check valves are mounted concentrically in Vcylinders 22 and 24 respectively and are disposed in the upper cha-mberS') of the cylinder-block. This chamber 30 communicates with Well pipe lil as clearly shown. It will be `noted that `this valve construction is so designed and mounted that it may lbeeasily mounted in the `cylinder block or remo-ved therefrom by the simple operation of removing` a screw 32 which is threaded into a rblind recess 34 formed in the upper end portion of the cylinder block. The head 36 of screw 32 engages the disc valve set member 38 `to force it 'to position against the .shoulder 4U .formed in cylinder ybloclr'Zll with a suitable valve gasket 42 positioned therebetween. The valve 2% is adapted to slide on the plane section 4'4 of screw 32 and to contact' an adjustable stop nut d which may loe adjusted to any desired position to 'limit the upward movement fof valve 25.

It Will be noted that valve -26 is provided with a hub A48 which is recessed at 50 so that the valve may move to contact stop nut 46 without any interferences from` the threads 5l.` Valve 23 is similarly constructed .and ,mounted so :as to operate in like manner.

An operating piston 52 comprises a hollow body member 5to-fleet and threaded at 56 to receive a nut 58 by means of which is secured the piston gasket 60. This `gasket 60 is preferably made 4 of leather or some similar material which will resist wea-r and will tend to seal the piston in lthe cylinder.

It will be` noted that the pump` rods i612 and '8.4 `are 'formed so as to `enter the cylinders from.

their open bottom endsto securely engage the centrally ldisposed sleeve 4lib which is secured by the radialspokes 'B8 to the piston body l"54.r The threaded portion of pump rod B2 is slightly reduced to present Aa shoulder 'lf2 which engages the .flower side of sleeve 66 and the upper end of pum-prod A62. is reduced at' 'I4 tor receive the slidably mounted valve T6. This valve is recessed at `'l-8 to receive the nut 8D which engages the. upper end of. 14 to limit the upward travel `of valve 16. This valve construction vpresents Aa compact valve which l'can lbe moved'in' the cylinider close Yto thecheck valve 26, thus making it possible to deliver substantially all the water lfrom the respective Icylinders to the well .pipe I0. 'Since in someinstances the pump rods 62 and 6l will :be :of considerable length, it `is .found .necessary to .properly guide these rods yadjacent the pistons. For this purpose the tubular ears 32 adjacent the top of the Cylinder block and i ears 84 adjacent the bottom thereof serve to maintain the pump rods in axial alignment with the movement of the pistons in the cylinders. These pump rods 62 and 64 extend upwardly to a point adjacent the top of the well and are provided with a guide blo-ck 86 and are respectively is in mesh with gear 94 and is driven by motor |00 through pulley |02 and pulley |04 interconnec-ted by means of belt |08. When so driven, the pistons in the cylinder block will be oppositely reciprocated at all times so as to produce a continuous flow of water from the well pipe |28, and as one of the cylinders is being emptied the other will be filling.

Attention is called to the one piece cylinder block 20 which is so constructed that the cylinders may be bored from the open end, shoulder 40 will simultaneously be formed and while the cylinder is still in axial alignment with the iinishing tool, recess 34 may be bored and tapped to receive the machine screw 32. The upper end of the casting may be centered, bored and tapped to receive the well tubing I0 from above. l

It is quite apparent that this structure is very sturdy, simple and easily machined, thus prof of the piston and the piston rods.

The piston l| |0 is provided with a body member l I2 reduced at I |4.and threaded at I I6 to receive the internal threads IIB of the valve seat |20.

Valve body member ||J is provided at its lower extremity with a screen cage |22 about which is circumscribed a cylindrical screen |24 through which the fluid to be pumped must pass before entering the pump cylinders.

which is mounted an axially disposed screw |28, the body of which serves as a guide for the valve |30. Furthermore, the head of the bolts serves to limit the opening movement of the valve. The

valve gasket |32 has an inturned flange |34 which is disposed between the body member 2 and the valve seat |20. The outside diameter of the` screen |24 is slightly smaller than the inside diameter of the cylinder, thus permitting free movement of the screen portion of the piston into the piston as indicated in Fig, 8. comprises a U-shaped structure |35 which straddles the respective cylinders with its lower vthreaded ends extended through the lower flanges |38 of the body member I|2. The upper end of 4|36 is adapted to receive the operating rod |40 to which it is secured by means of nuts |42. The bifurcated portions |44 of member |36 are adapted to slide through the sleeves |46 made integral with the cylinder block 20. This type of.

connecting rod for the piston insures a proper centering of the piston during its travel into thev cylinder and also prevents accidental bending of the rods.

Valve seat |20 is provided with .a central body portion |26 inv The piston rody Vducing a vvery inexpensive andv eicient pump` .upper end of said The means for driving the piston rods might be varied to produce their proper reciprocation` without departing fromthe spirit of this invention.

lHaving thus described the invention, what I claim as new and desire to be secured by Letters Patent is:

1. A double acting pump comprising a unitary cylinder block having a pair of open end cylinders and a chamber formed` therein, a piston mounted in each of said cylinders, a well pipe communicating with said chamber, valves and valve seats controlling the flow of fluid from said cylinders to said chamber, a screw extending upwardly through each of said valve seats and threaded into said cylinder block whereby said valve seats `and valves are removably mounted in saidv cylinders, a J-shaped piston rod engaging each of said pistons respectively vand extending below said cylinder block and through apertured ears carried by said cylinder block, `and driving means at the top of the well operable to successively operate said pistons to force fluid through said Well pipe.

2. A double acting pump comprising a unitary cylinder block having a top chamber communicating with the well pipe, and having a pair of open end cylinders provided at their upper ends with an inturned annular flange, a valve seat positioned in' each of said cylinders against said flanges, a screw engaging each of said valve seats and extended through said chamber to engage a threaded recess formed in the cylinder block to force said valve seat against said flange, a valve mounted in each of said valve seats operable by liquid pressure to permit the flow of liquid from said cylinders to said chamber, a valved piston mounted in each of said cylinders, and meansoperable to cause said pistons to successively move to force liquid through said well pipe.

3. A double acting pump comprising a unitary cylinder block having a top chamber communieating with the well pipe, and having a pair of open end cylinders provided at their upper ends with an inturned annular flange, a valve seat positioned in each of said cylinders against said flanges, a screw engaging each of saidvalve seats and extended through said chamber to engage a threaded recess formed in the cylinder block to force said valve seat against said flange, a valve mounted in each of said valve seats operable by liquid pressure to permit the flow of Aliquid from said cylinders to said chamber, a valved piston mounted in each of said cylinders, and means, including J-shaped piston rods, a motor, speed reduction gears interconnecting said 'motor with said piston rods, whereby said pistons are successively reciprocated to force liquid through said well pipe.

4. In a reciprocating type pump, a unitary cylinder block having an upright cylinder therein open at the lower end of the block, with said open end of the cylinder constituting an inlet for Said pump, chamber means at the upper end of said block communicating with said cylinder and with a discharge pipe for said pump, valved piston means operatively Aassociated-with said cylinder and receivable in said cylinder through the open end thereof, an annular shoulder adjacent the cylinder, valve means for controlling the flow v f fluidv from said cylinder 1ocated in said chamber meansand including an open annular valve seat engageable with the under side of said shoulder, screw means extended upwardly through saidvalve nseat and threadable in the top wall of said chamber means to hold said valve seat against said shoulder, and a valve member movably supported on said screw means for movement into and out of a seating relation with said valve seat, with said valve means being removable through the open end of said cylinder on disengagement of said screw means from the top Wall of said chamber means.

5. In a reciprocating type pump, a unitary cylinder block having an upright cylinder therein open at the lower end of the block, with said open end of the cylinder constituting an inlet for said pump, chamber means at the upper end of said block communicating with said cylinder and with' a discharge pipe for said pump, valved piston means operatively associated with said cylinder and receivable in said cylinder through the open 6. In a reciprocating type pump, a unitary cylinder block having an upright cylinder therein open at the lower end of the block, with said open end of the cylinder constituting an inlet for said pump, chamber means at the upper end of said block communicating with said cylinder and with a discharge pipe for said pump`, valved piston means operatively associated with said cylinder and receivable in said cylinder through the open end thereof, an elongated screen member carried f by said valved piston, whereby all iiuid passing end thereof, an elongated screen member carried by said valved piston, whereby all fluid passing through said valved piston to said cylinder will pass through said screen, an annular shoulder adjacent the upper end of said cylinder, valve means for controlling the ilow of fluid from said cylinder located in said chamber means and including an open annular valve seat engageable with the under side of said shoulder, screw means extended upwardly through said valve seat and threadable in the top wall of said chamber means to hold said valve seat against said shoulder, land a valve member movably supported on said screw means for movement into and out of a seating relation with said valve seat, with said valve means being removable through the open end of said cylinder on disengagement of said screw means from the top wall of said chamber means.

through said valved piston to said cylinder will pass through said screen, an annular shoulder adjacent the upper end of said cylinder, valve means for controlling the flow of fluid from said cylinder located in said chamber means and including an open annular valve seat engageable with the under side of said shoulder, screw means extended upwardly through said valve seat and threadable in the top wall of said chamber means to hold said valve seat against said shoulder, and afvalve member movably supported on said screw means for movement into and out of a seating relation with said valve seat, with said valve means being removable through the open end of said cylinder on disengagement of saidscrew means from the top wall of said chamber means, and a Ibifurcated piston rod straddling said cylinder and engaging opposite edges of the lower extremity of said screen member whereby said piston is reciprocated as said piston rod is reciprocated.

JESSE R. LOWRY. 

